code: def __call__(self, y, x=None):
      inputs = [y]
      order = y.order
      if x is not None:
          x = astensor(x)
          inputs.append(x)
          if x.order == TensorOrder.C_ORDER:
              order = TensorOrder.C_ORDER
  
      shape = tuple(
          s for ax, s in enumerate(y.shape) if ax != self._axis
      )
      dtype = np.trapz(np.empty(1, dtype=y.dtype)).dtype
      return self.new_tensor(
          inputs, shape=shape, dtype=dtype, order=order
      )
  
imports: import numpy
  from ...None import opcodes
  from ...core import recursive_tile
  from ...serialization.serializables import KeyField, Float64Field, Int8Field
  from ...utils import has_unknown_shape
  from ..array_utils import as_same_device, device
  from ..core import TensorOrder
  from ..datasource import tensor
  from ..operands import TensorOperand, TensorOperandMixin
  from ..utils import validate_axis
label_desc: Use image node_id 7 for calling the TensorTrapz obj's underlying member method code with example usage: obj.__call__(y, x) and returns: self