Method equals

corpus/java/training/guava/base/Equivalence.java:195–214

Returns true if Equivalence#equivalent(Object, Object) applied to the wrapped references is true and both wrappers use the Object#equals(Object) same equivalence.

(@Nullable Object obj)

     * equivalence.
     */
    @Override
    public boolean equals(@Nullable Object obj) {
      if (obj == this) {
        return true;
      }
      if (obj instanceof Wrapper) {
        Wrapper<?> that = (Wrapper<?>) obj; // note: not necessarily a Wrapper<T>

        if (this.equivalence.equals(that.equivalence)) {
          /*
           * We'll accept that as sufficient "proof" that either equivalence should be able to
           * handle either reference, so it's safe to circumvent compile-time type checking.
           */
          @SuppressWarnings("unchecked")
          Equivalence<Object> equivalence = (Equivalence<Object>) this.equivalence;
          return equivalence.equivalent(this.reference, that.reference);
        }
      }
      return false;
    }

    /**
     * Returns the result of {@link Equivalence#hash(Object)} applied to the wrapped reference.