private String getRealCallingConventionName() {
		// NOTE: Method only invoked from locked-block
		if (thunkedFunction != null) {
			return thunkedFunction.getRealCallingConventionName();
		}
		byte callingConventionID = rec.getByteValue(FunctionAdapter.CALLING_CONVENTION_ID_COL);
		String name = program.getDataTypeManager().getCallingConventionName(callingConventionID);
		if (UNKNOWN_CALLING_CONVENTION_STRING.equals(name) ||
			DEFAULT_CALLING_CONVENTION_STRING.equals(name)) {
			name = null;
		}
		// null returned for unknown or default calling convention
		return name;
	}
Sets the indicated function flag to true or false.

@param functionFlagIndicator
           the function flag from the FunctionAdapter class (i.e.
           FunctionAdapter.FUNCTION_VARARG_FLAG,
           FunctionAdapter.FUNCTION_INLINE_FLAG,
           FunctionAdapter.FUNCTION_NO_RETURN_FLAG,
           FunctionAdapter.FUNCTION_CUSTOM_PARAM_STORAGE_FLAG)
@param shouldBeSet
           true means the indicated flag should be set.
Ghidra/Framework/SoftwareModeling/src/main/java/ghidra/program/database/function/FunctionDB.java