Provide a headerAs function analagous to bodyAs
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Key: CAMEL-3054
URL: https://issues.apache.org/activemq/browse/CAMEL-3054
Project: Apache Camel
Issue Type: Improvement
Components: camel-core
Reporter: Edward Dale
To allow a header to be coaxed to a certain class, a {{headerAs}} "function"
would be useful in the Simple language. It would provide the same function as
the current {{bodyAs}}.
One possible use case for this is:
bq. simple("${in.header.foo} > 100")
which would fail if {{foo}} is a string. Casting it to an integer with
{{headerAs}} would solve this, as would #CAMEL-3052.
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