code: public ConstraintNetwork getMetaValue(MetaVariable metaVariable) {
  		ConstraintNetwork[] vals = this.getMetaValues(metaVariable);
  		if (valOH != null) Arrays.sort(vals, valOH);
  		return vals[0];
  	}
docs: Get one meta value for a given {@link MetaVariable}. Note that this calls
  the getMetaValues method (which must be implemented in the specific
  {@link MetaConstraint}) and returns the value with highest score as determined
  by this {@link MetaConstraint}'s {@link ValueOrderingH}.
  @param metaVariable The {@link MetaVariable} for which we seek a meta value.
  @return The best meta value for the given {@link MetaVariable}.