code: def matchKeyName(self, keyname):
      if self.glname.startswith(keyname):
          extrachars = self.glname[len(keyname) :]
          if all([(c in self.ALLSKIPCHARS) for c in extrachars]):
              return extrachars
  
imports: import os
label_desc: Use image node_id 3 for calling the FunctionDefinition obj's underlying member method code with example usage: obj.matchKeyName(keyname) and returns: extrachars