# Deprecated use of positional argument mem
@deprecate LBFGSOperator(T::DataType, n::Int, mem::Int; kwargs...) LBFGSOperator(
  T,
  n;
  mem = mem,
  kwargs...,
) false
@deprecate LBFGSOperator(n::Int, mem::Int; kwargs...) LBFGSOperator(n; mem = mem, kwargs...) false
@deprecate InverseLBFGSOperator(T::DataType, n::Int, mem::Int; kwargs...) InverseLBFGSOperator(
  T,
  n;
  mem = mem,
  kwargs...,
) false
@deprecate InverseLBFGSOperator(n::Int, mem::Int; kwargs...) InverseLBFGSOperator(
  n;
  mem = mem,
  kwargs...,
) false
@deprecate LSR1Operator(T::DataType, n::Int, mem::Int; kwargs...) LSR1Operator(
  T,
  n;
  mem = mem,
  kwargs...,
) false
@deprecate LSR1Operator(n::Int, mem::Int; kwargs...) LSR1Operator(n; mem = mem, kwargs...) false