function maybeParameter(sName, aOverloads) {
		return aOverloads.some(function (oOverload) {
			return sName === "$ReturnType"
				? oOverload.$ReturnType
				: oOverload.$Parameter && oOverload.$Parameter.some(function (oParameter) {
					return oParameter.$Name === sName;
				});
		});
	}
Tells whether the given name matches a parameter of at least one of the given overloads, or
is the special name "$ReturnType" and at least one of the given overloads has a return type.

@param {string} sName
  A path segment which maybe is a parameter name or the special name "$ReturnType"
@param {object[]} aOverloads
  Operation overload(s)
@returns {boolean}
  <code>true</code> iff at least one of the given overloads has a parameter with the given
  name (incl. the special name "$ReturnType")