docs: public static EquivalentFragmentSet rolePlayer(VarProperty varProperty, Variable relation, Variable edge, Variable rolePlayer, @Nullable Variable role, @Nullable ImmutableSet<Label> roleLabels, @Nullable ImmutableSet<Label> relTypeLabels) {
          return new AutoValue_RolePlayerFragmentSet(varProperty, relation, edge, rolePlayer, role, roleLabels, relTypeLabels);
      }