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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 bin_executables(self):
 """A normalized map of bin executable names and local path to an executable :rtype: dict """

    if isinstance(self.payload.bin_executables, string_types):
      # In this case, the package_name is the bin name
      return { self.package_name: self.payload.bin_executables }

    return self.payload.bin_executables