'insert_text(self, text, position)
:param new_text:
the text to append
:type new_text: :obj:`str`
:param position:
location of the position text will be inserted at
:type position: :obj:`int`
:returns:
location of the position text will be inserted at
:rtype: :obj:`int`
Inserts `new_text` into the contents of the
widget, at position `position`.
Note that the position is in characters, not in bytes.'

def insert_text(self, text, position):

    return super(Editable, self).insert_text(text, (-1), position)
