LitElement 
	
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			Interface InternalPropertyDeclaration<Type> 
		 
	 
 
	
		
			
			
				Hierarchy 
				
					
						InternalPropertyDeclaration 
					 
				 
			 
			
			
				Methods 
				
					 
					Optional  hasChanged  
					
						hasChanged( value:  Type , oldValue:  Type ) :  boolean   
					 
					
						
							
							
							Parameters 
							
								
									value: Type  
								 
								
									oldValue: Type  
								 
							 
							Returns boolean  
						 
					 
				 
			 
		 
		
	 
 
	
		Legend 
		
			
				Module  
				Object literal  
				Variable  
				Function  
				Function with type parameter  
				Index signature  
				Type alias  
				Type alias with type parameter  
			 
			
				Enumeration  
				Enumeration member  
				Property  
				Method  
			 
			
				Interface  
				Interface with type parameter  
				Constructor  
				Property  
				Method  
				Index signature  
			 
			
				Class  
				Class with type parameter  
				Constructor  
				Property  
				Method  
				Accessor  
				Index signature  
			 
			
				Inherited constructor  
				Inherited property  
				Inherited method  
				Inherited accessor  
			 
			
				Protected property  
				Protected method  
				Protected accessor  
			 
			
				Private property  
				Private method  
				Private accessor  
			 
			
				Static property  
				Static method  
			 
		 
	 
 
 
A function that indicates if a property should be considered changed when it is set. The function should take the
newValueandoldValueand returntrueif an update should be requested.