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-rw-r--r--include/proj/crs.hpp3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/proj/crs.hpp b/include/proj/crs.hpp
index 2b919c71..356c29d9 100644
--- a/include/proj/crs.hpp
+++ b/include/proj/crs.hpp
@@ -514,6 +514,9 @@ class PROJ_GCC_DLL DerivedCRS : virtual public SingleCRS {
PROJ_PRIVATE :
//! @cond Doxygen_Suppress
+
+ // Use this method with extreme care ! It should never be used
+ // to recreate a new Derived/ProjectedCRS !
PROJ_INTERNAL const operation::ConversionNNPtr &
derivingConversionRef() PROJ_PURE_DECL;