getField abstract method

Gets a field by its name.

Parameters:

• name: The field name to look up

Returns:

• The matching field if found
• null if no field with this name exists

Example:

final field = Class.forType<Rectangle>().getField('width');
print(field?.type.getName()); // 'double'

Note:

• Only checks directly declared fields
• For inherited fields, traverse class hierarchy