### Question:
Identifier implements ProtoObject<IdentifierProto> { public boolean equals(Object obj) { if (this == obj) { return true; } if (obj instanceof Identifier) { Identifier other = (Identifier) obj; return name.equals(other.name) && quoted == other.quoted; } return false; } private  Identifier(String name, boolean quoted); static Identifier _(String name); static Identifier _(String name, boolean quoted); String raw(IdentifierPolicy policy); String interned(IdentifierPolicy policy); @Override String toString(); int hashCode(); boolean equals(Object obj); @Override IdentifierProto getProto(); static Identifier fromProto(IdentifierProto proto);  }### Answer:
@Test public void equals() throws Exception { }