eCrossAttn. If
only_cross_attention is given as a single boolean and mid_block_only_cross_attention is None, the
only_cross_attention value is used as the value for mid_block_only_cross_attention. Default to False
otherwise.  disable_freeu  < source > ( )    Disables the FreeU mechanism.  enable_freeu  < source > ( s1 s2 b1 b2  )   Parameters   s1 (float) —
Scaling factor for stage 1 to attenuate the contributions of the skip features. This is 