public static int getCallingConventionSignatureOffset(Function function) {
		PrototypeModel callingConvention = function.getCallingConvention();
		if (callingConvention == null) {
			return 0;
		}
		String callingConventionName = callingConvention.getName();
		if (callingConventionName == null) {
			return 0;
		}
		if (callingConventionName.equals(Function.UNKNOWN_CALLING_CONVENTION_STRING)) {
			return 0;
		}
		return callingConventionName.length() + 1;

	}
Returns a FieldStringInfo object for the given function's name.  This info contains
the name string and its location in the function signature.

@param function The function from which to get the name.
@param functionSignatureString The function signature string from which to get the name
string.
@return Returns a FieldStringInfo object for the given function's name.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/navigation/FunctionUtils.java