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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ReadLines(self, file_object):
 """Reads lines into the lines buffer. Args: file_object (dfvfs.FileIO):
 file-like object. """

    lines_size = len(self.lines)
    if lines_size < self._buffer_size:
      lines_size = self._buffer_size - lines_size
      while lines_size > 0:
        line = self._ReadLine(file_object)
        if not line:
          break

        self.lines = ''.join([self.lines, line])
        lines_size -= len(line)