Complex classes like Jetpack_Site often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Jetpack_Site, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 9 | class Jetpack_Site extends Abstract_Jetpack_Site { | 
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| 10 | |||
| 11 | 	protected function get_mock_option( $name ) { | 
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| 14 | |||
| 15 | 	protected function get_constant( $name ) { | 
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| 21 | |||
| 22 | 	protected function main_network_site() { | 
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| 25 | |||
| 26 | 	protected function wp_version() { | 
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| 30 | |||
| 31 | 	protected function max_upload_size() { | 
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| 34 | |||
| 35 | 	protected function wp_memory_limit() { | 
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| 38 | |||
| 39 | 	protected function wp_max_memory_limit() { | 
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| 42 | |||
| 43 | 	protected function is_main_network() { | 
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| 46 | |||
| 47 | 	public function is_multisite() { | 
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| 50 | |||
| 51 | 	public function is_single_user_site() { | 
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| 54 | |||
| 55 | 	protected function is_version_controlled() { | 
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| 58 | |||
| 59 | 	protected function file_system_write_access() { | 
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| 62 | |||
| 63 | 	protected function current_theme_supports( $feature_name ) { | 
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| 66 | |||
| 67 | 	protected function get_theme_support( $feature_name ) { | 
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| 70 | |||
| 71 | 	public function get_updates() { | 
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| 74 | |||
| 75 | 	function get_id() { | 
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| 78 | |||
| 79 | 	function has_videopress() { | 
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| 88 | |||
| 89 | 	function upgraded_filetypes_enabled() { | 
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| 92 | |||
| 93 | 	function is_mapped_domain() { | 
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| 96 | |||
| 97 | 	function get_unmapped_url() { | 
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| 101 | |||
| 102 | 	function is_redirect() { | 
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| 105 | |||
| 106 | 	function is_following() { | 
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| 109 | |||
| 110 | 	function has_wordads() { | 
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| 113 | |||
| 114 | 	function get_frame_nonce() { | 
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| 117 | |||
| 118 | 	function get_jetpack_frame_nonce() { | 
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| 121 | |||
| 122 | 	function is_headstart_fresh() { | 
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| 125 | |||
| 126 | 	function allowed_file_types() { | 
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| 140 | |||
| 141 | 	function is_private() { | 
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| 144 | |||
| 145 | 	function get_plan() { | 
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| 148 | |||
| 149 | 	function get_subscribers_count() { | 
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| 152 | |||
| 153 | 	function get_capabilities() { | 
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| 156 | |||
| 157 | 	function get_locale() { | 
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| 160 | |||
| 161 | 	function is_jetpack() { | 
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| 164 | |||
| 165 | 	public function get_jetpack_version() { | 
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| 168 | |||
| 169 | 	function get_ak_vp_bundle_enabled() {} | 
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| 170 | |||
| 171 | 	function get_jetpack_seo_front_page_description() { | 
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| 174 | |||
| 175 | 	function get_jetpack_seo_title_formats() { | 
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| 178 | |||
| 179 | 	function get_verification_services_codes() { | 
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| 182 | |||
| 183 | 	function get_podcasting_archive() { | 
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| 186 | |||
| 187 | 	function is_connected_site() { | 
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| 190 | |||
| 191 | 	function current_user_can( $role ) { | 
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| 194 | |||
| 195 | /**  | 
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| 196 | * Check if full site editing should be considered as currently active. Full site editing  | 
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| 197 | * requires the FSE plugin to be installed and activated, as well the current  | 
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| 198 | * theme to be FSE compatible. The plugin can also be explicitly disabled via the  | 
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| 199 | * a8c_disable_full_site_editing filter.  | 
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| 200 | *  | 
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| 201 | * @since 7.7.0  | 
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| 202 | *  | 
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| 203 | * @return bool true if full site editing is currently active.  | 
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| 204 | */  | 
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| 205 | 	function is_fse_active() { | 
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| 211 | |||
| 212 | /**  | 
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| 213 | * Check if site should be considered as eligible for full site editing. Full site editing  | 
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| 214 | * requires the FSE plugin to be installed and activated. For this method to return true  | 
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| 215 | * the current theme does not need to be FSE compatible. The plugin can also be explicitly  | 
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| 216 | * disabled via the a8c_disable_full_site_editing filter.  | 
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| 217 | *  | 
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| 218 | * @since 8.1.0  | 
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| 219 | *  | 
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| 220 | * @return bool true if site is eligible for full site editing  | 
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| 221 | */  | 
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| 222 | 	public function is_fse_eligible() { | 
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| 228 | |||
| 229 | /**  | 
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| 230 | * Return the last engine used for an import on the site.  | 
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| 231 | *  | 
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| 232 | * This option is not used in Jetpack.  | 
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| 233 | */  | 
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| 234 | 	function get_import_engine() { | 
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| 237 | |||
| 238 | /**  | 
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| 239 | * Post functions  | 
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| 240 | */  | 
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| 241 | |||
| 242 | 	function wrap_post( $post, $context ) { | 
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| 245 | |||
| 246 | }  | 
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| 247 |