Returns the 'EntityType' OData element contained by the 'EntitySet' element that is associated with the collectionId matching. 
      Syntax
         
         
            public 
            abstract IODataEntityType  
            getEntityTypeForCollection
            (
            String 
            collectionId
            )
         
      
      Parameters
         
         
            - 
               collectionId – 
               The Id to be compared with the name of 'EntitySet' elements
            
 
         
       
      Returns
         The matching EntityType