Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php  | 
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| 33 | class ExampleCommands extends \Robo\Tasks  | 
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| 34 | { | 
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| 35 | /**  | 
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| 36 | * Watch a file.  | 
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| 37 | *  | 
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| 38 | * Demonstrates the 'watch' command. Runs 'composer update' any time  | 
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| 39 | * composer.json changes.  | 
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| 40 | */  | 
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| 41 | public function tryWatch()  | 
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| 47 | |||
| 48 | /**  | 
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| 49 | * Demonstrates Robo input APIs.  | 
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| 50 | */  | 
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| 51 | public function tryInput()  | 
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| 66 | |||
| 67 | /**  | 
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| 68 | * Demonstrate Robo configuration.  | 
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| 69 | *  | 
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| 70 | * Config values are loaded from the followig locations:  | 
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| 71 | *  | 
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| 72 | * - [Robo Project]/robo.yml  | 
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| 73 | * - $HOME/.robo/robo.yml  | 
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| 74 | * - $CWD/robo.yml  | 
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| 75 | * - Environment variables ROBO_CONFIG_KEY (e.g. ROBO_OPTIONS_PROGRESS_DELAY)  | 
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| 76 | * - Overridden on the commandline via -Doptions.progress-delay=value  | 
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| 77 | *  | 
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| 78 | * @param string $key Name of the option to read (e.g. options.progress-delay)  | 
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| 79 | * @option opt An option whose value is printed. Can be overridden in  | 
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| 80 | * configuration via the configuration key command.try.config.options.opt.  | 
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| 81 | * @option show-all Also print out the value of all configuration options  | 
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| 82 | */  | 
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| 83 | public function tryConfig($key = 'options.progress-delay', $options = ['opt' => '0', 'show-all' => false])  | 
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| 94 | |||
| 95 | /**  | 
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| 96 | * Demonstrates serial execution.  | 
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| 97 | *  | 
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| 98 | * @option $printed Print the output of each process.  | 
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| 99 | * @option $error Include an extra process that fails.  | 
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| 100 | */  | 
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| 101 | public function tryExec($options = ['printed' => true, 'error' => false])  | 
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| 118 | |||
| 119 | /**  | 
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| 120 | * Demonstrates parallel execution.  | 
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| 121 | *  | 
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| 122 | * @option $printed Print the output of each process.  | 
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| 123 | * @option $error Include an extra process that fails.  | 
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| 124 | */  | 
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| 125 | public function tryPara($options = ['printed' => true, 'error' => false])  | 
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| 139 | |||
| 140 | /**  | 
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| 141 | * try:opt-required  | 
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| 142 | */  | 
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| 143 | public function tryOptRequired($options = ['foo' => InputOption::VALUE_REQUIRED])  | 
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| 147 | |||
| 148 | /**  | 
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| 149 | * Demonstrates Robo argument passing.  | 
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| 150 | *  | 
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| 151 | * @param string $a The first parameter. Required.  | 
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| 152 | * @param string $b The second parameter. Optional.  | 
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| 153 | */  | 
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| 154 | public function tryArgs($a, $b = 'default')  | 
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| 158 | |||
| 159 | /**  | 
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| 160 | * Demonstrate Robo variable argument passing.  | 
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| 161 | *  | 
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| 162 | * @param array $a A list of commandline parameters.  | 
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| 163 | * @param array $options  | 
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| 164 | */  | 
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| 165 | public function tryArrayArgs(array $a, array $options = ['foo' => []])  | 
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| 172 | |||
| 173 | /**  | 
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| 174 | * Demonstrate use of SymfonyStyle $io object and Symfony $input object in  | 
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| 175 | * Robo in place of the usual "parameter arguments".  | 
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| 176 | *  | 
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| 177 | * @arg array $a A list of commandline parameters.  | 
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| 178 | * @option foo  | 
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| 179 | * @default a []  | 
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| 180 | * @default foo []  | 
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| 181 | */  | 
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| 182 | View Code Duplication | public function trySymfony(SymfonyStyle $io, InputInterface $input)  | 
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| 192 | |||
| 193 | public function tryText()  | 
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| 199 | |||
| 200 | /**  | 
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| 201 | * Demonstrate Robo boolean options.  | 
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| 202 | *  | 
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| 203 | * @param $opts The options.  | 
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| 204 | * @option boolean $silent Supress output.  | 
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| 205 | */  | 
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| 206 | public function tryOptbool($opts = ['silent|s' => false])  | 
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| 212 | |||
| 213 | /**  | 
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| 214 | * Demonstrate the use of the PHP built-in webserver.  | 
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| 215 | */  | 
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| 216 | public function tryServer()  | 
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| 223 | |||
| 224 | /**  | 
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| 225 | * Demonstrate the use of the Robo open-browser task.  | 
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| 226 | */  | 
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| 227 | public function tryOpenBrowser()  | 
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| 234 | |||
| 235 | /**  | 
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| 236 | * Demonstrate Robo error output and command failure.  | 
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| 237 | */  | 
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| 238 | public function tryError()  | 
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| 242 | |||
| 243 | /**  | 
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| 244 | * Demonstrate Robo standard output and command success.  | 
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| 245 | */  | 
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| 246 | public function trySuccess()  | 
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| 250 | |||
| 251 | /**  | 
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| 252 | * @field-labels  | 
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| 253 | * name: Name  | 
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| 254 | * species: Species  | 
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| 255 | * legs: Legs  | 
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| 256 | * food: Favorite Food  | 
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| 257 | * id: Id  | 
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| 258 | * @return PropertyList  | 
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| 259 | */  | 
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| 260 | public function tryInfo()  | 
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| 288 | |||
| 289 | /**  | 
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| 290 | * Demonstrate Robo formatters. Default format is 'table'.  | 
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| 291 | *  | 
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| 292 | * @field-labels  | 
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| 293 | * first: I  | 
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| 294 | * second: II  | 
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| 295 | * third: III  | 
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| 296 | * @default-string-field second  | 
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| 297 | * @usage try:formatters --format=yaml  | 
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| 298 | * @usage try:formatters --format=csv  | 
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| 299 | * @usage try:formatters --fields=first,third  | 
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| 300 | * @usage try:formatters --fields=III,II  | 
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| 301 | * @aliases tf  | 
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| 302 | *  | 
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| 303 | * @return \Consolidation\OutputFormatters\StructuredData\RowsOfFields  | 
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| 304 | */  | 
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| 305 | public function tryFormatters($somthing = 'default', $options = ['format' => 'table', 'fields' => ''])  | 
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| 315 | |||
| 316 | /**  | 
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| 317 | * Try word wrapping  | 
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| 318 | *  | 
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| 319 | * @field-labels  | 
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| 320 | * first: First  | 
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| 321 | * second: Second  | 
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| 322 | *  | 
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| 323 | * @return \Consolidation\OutputFormatters\StructuredData\RowsOfFields  | 
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| 324 | */  | 
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| 325 | public function tryWrap()  | 
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| 335 | |||
| 336 | /**  | 
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| 337 | * Demonstrate an alter hook with an option  | 
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| 338 | *  | 
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| 339 | * @hook alter try:formatters  | 
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| 340 | * @option $french Add a row with French numbers.  | 
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| 341 | * @usage try:formatters --french  | 
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| 342 | */  | 
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| 343 | public function alterFormatters($result, CommandData $commandData)  | 
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| 351 | |||
| 352 | /**  | 
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| 353 | * Demonstrate what happens when a command or a task  | 
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| 354 | * throws an exception. Note that typically, Robo commands  | 
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| 355 | * should return Result objects rather than throw exceptions.  | 
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| 356 | */  | 
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| 357 | public function tryException($options = ['task' => false])  | 
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| 364 | |||
| 365 | /**  | 
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| 366 | * Demonstrate deprecated task behavior.  | 
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| 367 | *  | 
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| 368 | * Demonstrate what happens when using a task that is created via  | 
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| 369 | * direct instantiation, which omits initialization done by the  | 
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| 370 | * container. Emits a warning message.  | 
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| 371 | */  | 
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| 372 | public function tryDeprecated()  | 
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| 379 | |||
| 380 | /**  | 
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| 381 | * Demonstrate the use of a collection builder to chain multiple tasks  | 
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| 382 | * together into a collection, which is executed once constructed.  | 
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| 383 | *  | 
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| 384 | * For demonstration purposes only; this could, of course, be done  | 
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| 385 | * with a single FilesystemStack.  | 
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| 386 | */  | 
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| 387 | public function tryBuilder()  | 
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| 401 | |||
| 402 | public function tryState()  | 
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| 412 | |||
| 413 | public function tryBuilderRollback()  | 
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| 440 | |||
| 441 | public function tryWorkdir()  | 
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| 468 | |||
| 469 | /**  | 
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| 470 | * Demonstrates Robo temporary directory usage.  | 
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| 471 | */  | 
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| 472 | public function tryTmpDir()  | 
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| 494 | |||
| 495 | /**  | 
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| 496 | * Description  | 
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| 497 | * @param $options  | 
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| 498 | * @option delay Miliseconds delay  | 
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| 499 | * @return type  | 
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| 500 | */  | 
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| 501 | public function tryProgress($options = ['delay' => 500])  | 
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| 521 | |||
| 522 | public function tryIter()  | 
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| 542 | }  | 
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| 543 | |||
| 558 | 
This check looks for calls to methods that do not seem to exist on a given type. It looks for the method on the type itself as well as in inherited classes or implemented interfaces.
This is most likely a typographical error or the method has been renamed.