testIMLContent function
Default IML file
Implementation
String testIMLContent() => '''
<?xml version="1.0" encoding="UTF-8"?>
<module type="JAVA_MODULE" version="4">
<component name="NewModuleRootManager" inherit-compiler-output="true">
<exclude-output />
<content url="file://\$MODULE_DIR\$">
<sourceFolder url="file://\$MODULE_DIR\$/lib" isTestSource="false" />
<sourceFolder url="file://\$MODULE_DIR\$/test" isTestSource="true" />
<excludeFolder url="file://\$MODULE_DIR\$/.dart_tool" />
<excludeFolder url="file://\$MODULE_DIR\$/.idea" />
<excludeFolder url="file://\$MODULE_DIR\$/build" />
</content>
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="library" name="Dart SDK" level="project" />
<orderEntry type="library" name="Flutter Plugins" level="project" />
<orderEntry type="library" name="Dart Packages" level="project" />
</component>
</module>
''';