public MetaExpression <bool> Equal(MetaExpression expression) { return(new MetaExpression <bool>()); }
public MetaExpression <bool> And(MetaExpression <bool> andExpression) { return(new MetaExpression <bool>()); }
public MetaExpression <bool> Or(MetaExpression <bool> orExpression) { return(new MetaExpression <bool>()); }