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Error Identifiers: pureFunction.*

There are 3 error identifiers in the pureFunction.* group:

• pureFunction.parameterByRef
  Pure function has a by-reference parameter, which allows side effects.
• pureFunction.redundantUnlessCallable
  Function is marked @pure-unless-callable-is-impure for a parameter that is already a pure callable.
• pureFunction.void
  Pure function returns void, making it useless without side effects.