code: def _reshape_X(self, X):
      self._init_shape_X = X.shape
      return self._reshape(X)
  
imports: from sklearn.decomposition import PCA
  from sklearn.linear_model import LinearRegression
  import geomstats.backend
label_desc: Use image node_id 4 for calling the WrappedLinearRegression obj's underlying member method code with example usage: obj._reshape_X(X) and returns: self