OBJ conditionals is not implemented properly, or hardly at all

[tngreene]

In the X-Plane OBJ spec, it lists one feature as conditionals for turning off objects based on features of X-Plane turned on:

Conditionalization

[X-Plane 1000:] X-Plane 10 supports the conditionalization of OBJ files.  Conditionalization is a process whereby the contents of a file are skipped or used depending on rendering settings.  Typical uses of conditionalization are to change the appearance of an object when shadows are enabled, or when HDR is on.

Conditionals for OBJs occur in the form of these commands:

IF <var>
IF NOT <var>
ELSE
ELSE IF <var>
ELSE IF NOT <var>
ENDIF

In the XPlane2Blender the word "ELSE" literally never appears. Only IF, IF NOT, and ENDIF are written. Is the spec wrong, deprecated, or is this not feature complete?

It is only tested in the unit tester as a sub test in "various.test.py", testing only IF, IF NOT, and ENDIF

[tngreene]

In addition, they do not wrap around the ANIM_ directives which seems kinda wasteful. Why have X-Plane load animations if the object will just get turned off?

[tngreene]

@bsupnik any notes for this to close it off either way?