def pretty_print(self, q):
    q.text('experimenter {')
    with q.group():
        with q.indent(2):
            q.breakable()
            q.text('data = ')
            q.pp(self.data)
        q.breakable()
    q.text('}')
def pretty_print(self, q):
    q.text('experimenter {')
    with q.group():
        with q.indent(2):
            q.breakable()
            q.text('data = ')
            q.pp(self.data)
        q.breakable()
    q.text('}')