Checks whether the field at the specified index is a nested TYPE1 structure, which is a
structure with a fixed length in memory, but with a nested layout
Checks whether the field with the specified name is a nested TYPE1 structure, which is a
structure with a fixed length in memory, but with a nested layout
Checks whether the field at the specified index is a nested TYPE1 structure, which is a
structure with a fixed length in memory, but with a nested layout
Checks whether the field with the specified name is a nested TYPE1 structure, which is a
structure with a fixed length in memory, but with a nested layout