code: def test_init_trace_continuation_unsupported(self):
      with pm.Model() as pmodel:
          A = pm.Normal("A")
          B = pm.Uniform("B")
          strace = pm.backends.ndarray.NDArray(vars=[A, B])
          strace.setup(10, 0)
          strace.record({"A": 2, "B_interval__": 0.1})
          assert len(strace) == 1
          with pytest.raises(
              ValueError, match="Continuation of traces"
          ):
              _init_trace(
                  expected_length=20,
                  stats_dtypes=pm.Metropolis().stats_dtypes,
                  chain_number=0,
                  trace=strace,
                  model=pmodel,
              )
  
file_path: pymc/tests/backends/test_base.py
imports: import numpy
  import pytest
  import pymc
  from pymc.backends import _init_trace
  from pymc.backends.base import _choose_chains
label_desc: Use image node_id 1 for calling the TestInitTrace obj's underlying member method code with example usage: obj.test_init_trace_continuation_unsupported() without return types