code: def time_sparse_array(self, dense_proportion, fill_value, dtype):
      SparseArray(self.array, fill_value=fill_value, dtype=dtype)
  
imports: import numpy
  import scipy.sparse
  import pandas
  from pandas import MultiIndex, Series, date_range
  from pandas.arrays import SparseArray
  from .pandas_vb_common import setup
label_desc: Use image node_id 2 for calling the SparseArrayConstructor obj's underlying member method code with example usage: obj.time_sparse_array(dense_proportion, fill_value, dtype) without return types