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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 environment_context_path(cls, project, environment, user, session, context):
 """Return a fully-qualified environment_context string."""

        return google.api_core.path_template.expand(
            'projects/{project}/agent/environments/{environment}/users/{user}/sessions/{session}/contexts/{context}',
            project=project,
            environment=environment,
            user=user,
            session=session,
            context=context,
        )