Exception in thread "main" java.util.ConcurrentModificationException
	at java.util.ArrayList.forEach(ArrayList.java:1252)
	at com.github.javaparser.ast.NodeList.forEach(NodeList.java:206)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.visit(VoidVisitorAdapter.java:118)
	at com.github.javaparser.ast.stmt.BlockStmt.accept(BlockStmt.java:73)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.lambda$visit$17(VoidVisitorAdapter.java:118)
	at java.util.ArrayList.forEach(ArrayList.java:1249)
	at com.github.javaparser.ast.NodeList.forEach(NodeList.java:206)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.visit(VoidVisitorAdapter.java:118)
	at com.github.javaparser.ast.stmt.BlockStmt.accept(BlockStmt.java:73)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.lambda$visit$97(VoidVisitorAdapter.java:409)
	at java.util.Optional.ifPresent(Optional.java:159)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.visit(VoidVisitorAdapter.java:409)
	at com.github.javaparser.ast.body.MethodDeclaration.accept(MethodDeclaration.java:111)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.lambda$visit$29(VoidVisitorAdapter.java:170)
	at java.util.ArrayList.forEach(ArrayList.java:1249)
	at com.github.javaparser.ast.NodeList.forEach(NodeList.java:206)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.visit(VoidVisitorAdapter.java:170)
	at com.github.javaparser.ast.body.ClassOrInterfaceDeclaration.accept(ClassOrInterfaceDeclaration.java:97)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.lambda$visit$40(VoidVisitorAdapter.java:192)
	at java.util.ArrayList.forEach(ArrayList.java:1249)
	at com.github.javaparser.ast.NodeList.forEach(NodeList.java:206)
	at com.github.javaparser.ast.visitor.VoidVisitorAdapter.visit(VoidVisitorAdapter.java:192)
	at com.github.javaparser.ast.CompilationUnit.accept(CompilationUnit.java:122)
	at Driver.main(Driver.java:35)