<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def featureName(self):
 """ ID attribute from GFF3 or None if record doesn't have it. Called "Name" rather than "Id" within GA4GH, as there is no guarantee of either uniqueness or existence. """

        featId = self.attributes.get("ID")
        if featId is not None:
            featId = featId[0]
        return featId