[F] validateDecoratorUniqueOnNode
function validateDecoratorUniqueOnNode(   context,   type,   decorator): booleanParameters
| Parameter | Type | 
|---|---|
context | DecoratorContext | 
type | Type | 
decorator | DecoratorFunction | 
Returns
boolean
function validateDecoratorUniqueOnNode(   context,   type,   decorator): boolean| Parameter | Type | 
|---|---|
context | DecoratorContext | 
type | Type | 
decorator | DecoratorFunction | 
boolean