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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 bind(self, study, **kwargs):
 # @UnusedVariable """ Returns a copy of the Spec bound to the given study Parameters study : Study A study to bind the fileset spec to (should happen in the study __init__) """

        if self._study is not None:
            # Avoid rebinding specs in sub-studies that have already
            # been bound to MultiStudy
            bound = self
        else:
            bound = copy(self)
            bound._study = study
            if not hasattr(study, self.pipeline_getter):
                raise ArcanaError(
                    "{} does not have a method named '{}' required to "
                    "derive {}".format(study, self.pipeline_getter,
                                       self))
            bound._bind_tree(study.tree)
        return bound