code: def _build_placeholder(self, ndarray):
      ndarray = np.asarray(ndarray).astype(self.dtype)
      return tf1.placeholder_with_default(
          ndarray,
          shape=ndarray.shape if self.use_static_shape else None,
      )
  
imports: import numpy
  import tensorflow.compat.v1
  import tensorflow.compat.v2
  from tensorflow_probability.python.distributions import mvn_diag
  from tensorflow_probability.python.internal import test_util
  from tensorflow_probability.python.sts.components.dynamic_regression import DynamicLinearRegression
  from tensorflow_probability.python.sts.components.dynamic_regression import DynamicLinearRegressionStateSpaceModel
label_desc: Use image node_id 4 for calling the _DynamicLinearRegressionStateSpaceModelTest obj's underlying member method code with example usage: obj._build_placeholder(ndarray) and returns: tf1