def areObservableElements(self, elementNames):
if not(hasattr(elementNames, "<STR_LIT>")):<EOL><INDENT>raise TypeError(<EOL>"<STR_LIT>" +<EOL>"<STR_LIT>"<EOL>.format(elementNames))<EOL><DEDENT>return self._evaluateArray(elementNames)<EOL>
Mention if all elements are observable element.

:param str ElementName: the element name to evaluate
:return: true if is an observable element, otherwise false.
:rtype: bool