class_docstr: Column that stores fields of values.
  
  Every column has n children, where n is
  the number of fields in the Struct Dtype.
class_docstr_tok: ["Column","that","stores","fields","of","values",".","Every","column","has","n","children",",","where","n","is","the","number","of","fields","in","the","Struct","Dtype","."]
code: def to_arrow(self):
      children = [
          pa.nulls(len(child))
          if len(child) == child.null_count
          else child.to_arrow()
          for child in self.children
      ]
  
      pa_type = pa.struct(
          {
              field: child.type
              for field, child in zip(self.dtype.fields, children)
          }
      )
  
      if self.nullable:
          buffers = (pa.py_buffer(self.mask.memoryview()),)
      else:
          buffers = (None,)
  
      return pa.StructArray.from_buffers(
          pa_type, len(self), buffers, children=children
      )
  
imports: from __future__ import annotations
  from functools import cached_property
  from typing import Optional
  import pandas
  import pyarrow
  import cudf
  from cudf._typing import Dtype
  from cudf.core.column import ColumnBase, build_struct_column
  from cudf.core.column.methods import ColumnMethods
  from cudf.core.dtypes import StructDtype
  from cudf.core.missing import NA
label_desc: Use image node_id 2 for calling the StructColumn obj's underlying member method code with example usage: obj.to_arrow() and returns: pa