code: def computeVectorInput(self, nVectors, N, M):
      expected = zeros([N, M * nVectors])
      inputs = [
          [
              [float(m + n * M + i * N * M) for m in range(M)]
              for n in range(N)
          ]
          for i in range(nVectors)
      ]
  
      for n in range(N):
          for i in range(nVectors):
              for m in range(M):
                  expected[n][m + i * M] = inputs[i][n][m]
  
      return inputs, expected
  
file_path: essentia/test/src/unittests/standard/test_multiplexer.py
imports: from essentia_test import *
label_desc: Use image node_id 2 for calling the TestMultiplexer obj's underlying member method code with example usage: obj.computeVectorInput(nVectors, N, M) and returns: inputs,  expected