/// <summary>
/// Adds the specified block type to the collection.
/// </summary>
/// <param name="blockTypeName">Name of the block type.</param>
/// <param name="isStructural">if set to <c>true</c> [is structural].</param>
/// <param name="isSystem">if set to <c>true</c> [is system].</param>
public void Add(
string blockTypeName,
bool isStructural,
bool isSystem = false)
{
var blockType = new BlockType(this)
{
Name = blockTypeName,
IsStructural = isStructural,
IsSystem = isSystem
};
BlockTypes.Add(blockTypeName, blockType);
}