File types in the device's file system.

Values:

IG_TW_FY_CAMERA

IG_TW_FY_CAMERABOTTOM

IG_TW_FY_CAMERAPREVIEW

IG_TW_FY_CAMERATOP

IG_TW_FY_DIRECTORY

IG_TW_FY_DOMAIN

IG_TW_FY_HOST

IG_TW_FY_IMAGE

IG_TW_FY_UNKNOWN