CeedOperator
  3 Fields
  2 Input Fields:
    Input Field [0]:
      Name: "weights"
      No vector
    Input Field [1]:
      Name: "dx"
      Active vector
  1 Output Field:
    Output Field [0]:
      Name: "rho"
      Collocated basis
      Active vector

CeedOperator
  3 Fields
  2 Input Fields:
    Input Field [0]:
      Name: "rho"
      Collocated basis
    Input Field [1]:
      Name: "u"
      Active vector
  1 Output Field:
    Output Field [0]:
      Name: "v"
      Active vector