[#BloombergLP-balxml-Formatter_PrettyImplUtil-addHeader]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balxml.adoc[balxml]::xref:BloombergLP/balxml/Formatter_PrettyImplUtil.adoc[Formatter_PrettyImplUtil]::addHeader
:relfileprefix: ../../../
:mrdocs:

Add XML header with optionally specified `encoding` to the specified `stream`, with formatting depending on the specified `state`, and update `state` accordingly. Return the `stream`. Version is always "1.0". The behavior is undefined unless `addHeader` is the first manipulator (with the exception of `rawOutputStream`) after construction or `reset`.

== Synopsis

Declared in `<balxml_formatter_prettyimpl.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
std::ostream&
addHeader(
    std::ostream& stream,
    xref:BloombergLP/balxml/Formatter_PrettyImplUtil/State.adoc[State]* state,
    std::string_view const& encoding);
----


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