public static Builder build() {
        return new Builder();
    }
Loads scripts from one or more files into the {@link GremlinScriptEngine} at startup. This {@link GremlinPlugin} is
not enabled for the {@code ServiceLoader}. It is designed to be instantiated manually. Those implementing
{@link GremlinScriptEngine} instances need to be concerned with accounting for this {@link Customizer}. It is
handled automatically by the {@link DefaultGremlinScriptEngineManager}.

@author Stephen Mallette (http://stephen.genoprime.com)
gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/jsr223/ScriptFileGremlinPlugin.java