Exception in thread "main" UnsolvedSymbolException{context='priority.map(bar::convert).orElse("0")', name='priority.map(bar::convert)', cause='java.lang.UnsupportedOperationException'}
	at com.github.javaparser.symbolsolver.javaparsermodel.contexts.AbstractJavaParserContext.findTypeDeclarations(AbstractJavaParserContext.java:209)
	at com.github.javaparser.symbolsolver.javaparsermodel.contexts.MethodCallExprContext.solveMethod(MethodCallExprContext.java:150)
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.solve(JavaParserFacade.java:273)
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.solve(JavaParserFacade.java:134)
	at com.github.javaparser.symbolsolver.JavaSymbolSolver.resolveDeclaration(JavaSymbolSolver.java:164)
	at com.github.javaparser.ast.expr.MethodCallExpr.resolve(MethodCallExpr.java:319)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1511)
	at com.flashresolve.parsertester.SymbolResolverTest.main(SymbolResolverTest.java:28)
Caused by: java.lang.UnsupportedOperationException
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.toMethodUsage(JavaParserFacade.java:443)
	at com.github.javaparser.symbolsolver.javaparsermodel.TypeExtractor.visit(TypeExtractor.java:627)
	at com.github.javaparser.symbolsolver.javaparsermodel.TypeExtractor.visit(TypeExtractor.java:65)
	at com.github.javaparser.ast.expr.MethodReferenceExpr.accept(MethodReferenceExpr.java:93)
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.getTypeConcrete(JavaParserFacade.java:501)
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.getType(JavaParserFacade.java:349)
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.getType(JavaParserFacade.java:358)
	at com.github.javaparser.symbolsolver.javaparsermodel.JavaParserFacade.getType(JavaParserFacade.java:331)
	at com.github.javaparser.symbolsolver.javaparsermodel.contexts.AbstractJavaParserContext.findTypeDeclarations(AbstractJavaParserContext.java:200)
	... 7 more