//
// If the variable is read_only(), only acquires reader locks.
Status LockVariables(absl::Span<VariableInfo*> variables)
    TF_EXCLUSIVE_LOCK_FUNCTION();
Status LockVariables(absl::Span<VariableInfo> variables)
    TF_EXCLUSIVE_LOCK_FUNCTION();

// Returns a vector of VariableInfo instances for the resource variable inputs,
// given that *all* inputs are in `inputs`. The input indices for the resource