message: Make MFIntegrator and PAIntegrator constructors protected.
diff: @@ -84,7 +84,6 @@ protected:
  CeedQFunctionContext build_ctx;
  CeedOperator build_oper;
  -public:
  PAIntegrator()
  : Operator(), basis(nullptr), mesh_basis(nullptr),
  restr(nullptr), mesh_restr(nullptr),
  @@ -93,6 +92,7 @@ public:
  qdata(nullptr), coeff(nullptr), build_ctx(nullptr), build_oper(nullptr)
  { }
  +public:
  /** This method assembles the PAIntegrator with the given CeedOperatorInfo
  @a info, an mfem::FiniteElementSpace @a fes, an mfem::IntegrationRule
  @a ir, and mfem::Coefficient or mfem::VectorCoefficient @a Q.
  @@ -331,7 +331,6 @@ protected:
  Coefficient *coeff;
  CeedQFunctionContext build_ctx;
  -public:
  MFIntegrator()
  : Operator(), basis(nullptr), mesh_basis(nullptr),
  restr(nullptr), mesh_restr(nullptr),
  @@ -339,6 +338,7 @@ public:
  apply_qfunc(nullptr), node_coords(nullptr),
  qdata(nullptr), coeff(nullptr), build_ctx(nullptr) { }
  +public:
  /** This method assembles the MFIntegrator with the given CeedOperatorInfo
  @a info, an mfem::FiniteElementSpace @a fes, an mfem::IntegrationRule
  @a ir, and mfem::Coefficient or mfem::VectorCoefficient @a Q.
  