Pie  |  9.0.0_r8
文本文件  |  9行  |  194 B 

Alert: field is MyField
Alert: sub_a is MyField.Sub_A
Alert: nonesuch is undefined
Alert: found 4 sub-fields:
Alert: MyField.Sub_A
Alert: MyField.Sub_B
Alert: MyField.Sub_X
Alert: MyField.Sub_Z