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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 get_first_mapping(cls):
 """This allows for Django-like inheritance of mapping configurations"""

    from .models import Indexable

    if issubclass(cls, Indexable) and hasattr(cls, "Mapping"):
        return cls.Mapping
    for base in cls.__bases__:
        mapping = get_first_mapping(base)
        if mapping:
            return mapping
    return None