@@ -32,7 +32,7 @@ discard block  | 
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| 32 | 32 | */  | 
                                                        
| 33 | 33 | public function getValueKind(): ValueKind  | 
                                                        
| 34 | 34 |      { | 
                                                        
| 35 | - return ValueKind::Null();  | 
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| 35 | + return ValueKind::null();  | 
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| 36 | 36 | }  | 
                                                        
| 37 | 37 | |
| 38 | 38 | /**  | 
                                                        
@@ -40,6 +40,6 @@ discard block  | 
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| 40 | 40 | */  | 
                                                        
| 41 | 41 | public function getExpressionKind(): ExpressionKind  | 
                                                        
| 42 | 42 |      { | 
                                                        
| 43 | - return ExpressionKind::Null();  | 
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| 43 | + return ExpressionKind::null();  | 
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| 44 | 44 | }  | 
                                                        
| 45 | 45 | }  | 
                                                        
@@ -20,7 +20,7 @@  | 
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| 20 | 20 | public function __construct()  | 
                                                        
| 21 | 21 |      { | 
                                                        
| 22 | 22 | $this->lookup[SchemaElementKind::TypeDefinition()->getKey()] = ISchemaType::class;  | 
                                                        
| 23 | - $this->lookup[SchemaElementKind::Function()->getKey()] = IFunction::class;  | 
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| 23 | + $this->lookup[SchemaElementKind::Function ()->getKey()] = IFunction::class;  | 
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| 24 | 24 | $this->lookup[SchemaElementKind::ValueTerm()->getKey()] = IValueTerm::class;  | 
                                                        
| 25 | 25 | $this->lookup[SchemaElementKind::EntityContainer()->getKey()] = IEntityContainer::class;  | 
                                                        
| 26 | 26 | }  | 
                                                        
@@ -20,7 +20,7 @@  | 
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| 20 | 20 | public function __construct()  | 
                                                        
| 21 | 21 |      { | 
                                                        
| 22 | 22 | $this->lookup[SchemaElementKind::TypeDefinition()->getKey()] = ISchemaType::class;  | 
                                                        
| 23 | - $this->lookup[SchemaElementKind::Function()->getKey()] = IFunction::class;  | 
                                                        |
| 23 | + $this->lookup[SchemaElementKind::function()->getKey()] = IFunction::class;  | 
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| 24 | 24 | $this->lookup[SchemaElementKind::ValueTerm()->getKey()] = IValueTerm::class;  | 
                                                        
| 25 | 25 | $this->lookup[SchemaElementKind::EntityContainer()->getKey()] = IEntityContainer::class;  | 
                                                        
| 26 | 26 | }  |