docstr: Return `out_dtype` from arraywriter
docstr_tok: ["Return","`","out_dtype","`","from","arraywriter"]
code: def out_dtype(self):
      """Return `out_dtype` from arraywriter"""
      return self._out_dtype
  
imports: import numpy
  from .casting import best_float, floor_exact, int_abs, shared_range, type_info
  from .volumeutils import array_to_file, finite_range
label_desc: Use image node_id 4 for calling the ArrayWriter obj's underlying member method code with example usage: obj.out_dtype() and returns: self