CeedOperator
  15 elements with 8 quadrature points each
  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
  15 elements with 8 quadrature points each
  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