No limitation on the number of item at this level. It has already been checked when preparing the query parameters
<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>puppi</name>
<comment></comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.cloudsmith.geppetto.pp.dsl.ui.modulefileBuilder</name>
<arguments>
</arguments>
</buildCommand>
<buildCommand>
<name>org.eclipse.xtext.ui.shared.xtextBuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.cloudsmith.geppetto.pp.dsl.ui.puppetNature</nature>
<nature>org.eclipse.xtext.ui.shared.xtextNature</nature>
</natures>
</projectDescription>