code: def time_flow(self):
      x = np.linspace(0, 1, 10)
      y = np.ones((7, x.size))
      solve_bvp(self.fun_flow, self.bc_flow, x, y, p=[1], tol=self.TOL)
  
imports: import numpy
  from .common import Benchmark, safe_import
  from scipy.integrate import quad, cumulative_simpson
label_desc: Use image node_id 3 for calling the SolveBVP obj's underlying member method code with example usage: obj.time_flow() without return types