elasticsearch/docs/painless/painless-api-reference/DoubleFunction.asciidoc

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[[painless-api-reference-DoubleFunction]]++DoubleFunction++::
* ++[[painless-api-reference-DoubleFunction-apply-1]]def link:{java8-javadoc}/java/util/function/DoubleFunction.html#apply%2Ddouble%2D[apply](double)++ (link:{java9-javadoc}/java/util/function/DoubleFunction.html#apply%2Ddouble%2D[java 9])
* Inherits methods from ++<<painless-api-reference-Object,Object>>++