public Builder normalize(final boolean normalize) {
            this.normalize = normalize;
            return this;
        }
Normalized output is deterministic with respect to the order of elements and properties in the resulting
XML document, and is compatible with line diff-based tools such as Git. Note: normalized output is
sideEffects-intensive and is not appropriate for very large graphs.

@param normalize whether to normalize the output.
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/structure/io/graphml/GraphMLWriter.java