Prior to this commit, MethodReference and PropertyOrFieldReference already defined local isNullSafe() methods, but we need identical methods in Selection, Projection, and Indexer, and we may potentially need null-safe support for additional operators in the future. To address the common need for an is-null-safe check, this commit introduces an isNullSafe() method in SpelNodeImpl with a default implementation that returns false. Closes gh-32516 |
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