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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 add_dependency(self, value):
 """Adds the specified executable dependency to the list for this executable."""

        if value.name in self.dependencies:
            self.dependencies[value.name.lower()].append(value)
        else:
            self.dependencies[value.name.lower()] = [ value ]