Read the content.

            Args:
                size (int): The size. Value ``-1`` means all.

            Keyword Args:
                offset (int): The offset.

            Returns:
                bytes

def read(self, size=-1, *, offset=0) -> bytes:
        '''
            Read the content.

            Args:
                size (int): The size. Value ``-1`` means all.

            Keyword Args:
                offset (int): The offset.

            Returns:
                bytes
        '''

        return self.mglo.read(size, offset)