Cast between enumeration types and integer types

Casting between enumeration types and integer types (of sufficient width) is possible based on the numeric value. This cast MUST be explicit, using the cast() function in URLs or the cast expression in CSDL. Call this out in URL Conventions, section 5.1.1.10.1  cast . Preferred wording: Services MAY support casting enumeration members to the underlying numeric values using the explicit cast function.