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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 composed_deps(self):
 """Dependencies of this build target."""

        if 'deps' in self.params:
            param_deps = self.params['deps'] or []
            deps = [self.makeaddress(dep) for dep in param_deps]
            return deps
        else:
            return None