### Question:
IgnoreLeftProcedure implements BinaryProcedure<L, R> { @Override public boolean equals(Object obj) { if (obj == this) { return true; } if (!(obj instanceof IgnoreLeftProcedure<?, ?>)) { return false; } IgnoreLeftProcedure<?, ?> that = (IgnoreLeftProcedure<?, ?>) obj; return this.procedure.equals(that.procedure); } IgnoreLeftProcedure(Procedure<? super R> procedure); void run(L left, R right); @Override boolean equals(Object obj); @Override int hashCode(); @Override String toString(); static IgnoreLeftProcedure<L, R> adapt(Procedure<? super R> procedure);  }### Answer:
@Test public void testEquals() throws Exception { BinaryProcedure<Object, Object> p = new IgnoreLeftProcedure<Object, Object>(NoOp.INSTANCE); assertEquals(p,p); assertObjectsAreEqual(p,new IgnoreLeftProcedure<Object, Object>(NoOp.INSTANCE)); assertObjectsAreNotEqual(p,NoOp.INSTANCE); assertObjectsAreNotEqual(p,new IgnoreLeftProcedure<Object, Object>(new Sequence<Object>())); assertTrue(!p.equals(null)); }