in commons-rdf-simple/src/main/java/org/apache/commons/rdf/simple/LiteralImpl.java [76:86]
public boolean equals(final Object obj) {
if (this == obj) {
return true;
}
if (obj == null || !(obj instanceof Literal)) {
return false;
}
final Literal literal = (Literal) obj;
return getDatatype().equals(literal.getDatatype()) && getLexicalForm().equals(literal.getLexicalForm())
&& getLanguageTag().equals(literal.getLanguageTag().map(LiteralImpl::lowerCase));
}