class_docstr: Represents a single row of a block matrix.
code: def _shape_tensor(self):
      row_dim = self.operators[0].range_dimension_tensor()
      col_dim = sum(o.domain_dimension_tensor() for o in self.operators)
      return tf.stack([row_dim, col_dim])
  
imports: import tensorflow.compat.v2
label_desc: Use image node_id 4 for calling the LinearOperatorRowBlock obj's underlying member method code with example usage: obj._shape_tensor() and returns: tf