public bool Equals(Map2D <TKey1, TKey2, TValue> x, Map2D <TKey1, TKey2, TValue> y)
{
if (ReferenceEquals(x, y))
{
return(true);
}
if (ReferenceEquals(x, null))
{
return(false);
}
if (ReferenceEquals(y, null))
{
return(false);
}
if (x.GetType() != y.GetType())
{
return(false);
}
return(Equals(x.map, y.map));
}