[java-inspections] IDEA-374922 Highlight the second main method as unused (part of IDEA-372969 WIP)

GitOrigin-RevId: 11bc0dcd62d29f94270781ea5a79f4665575d0a9

java/java-tests/testData/inspection/deadCode/severalMainMethods/expected.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+  <problem>
+    <file>Test.java</file>
+    <line>6</line>
+    <highlighted_element>t3</highlighted_element>
+    <problem_class id="unused" severity="WARNING" attribute_key="NOT_USED_ELEMENT_ATTRIBUTES">unused declaration</problem_class>
+    <description>Method is never used.</description>
+  </problem>
+</problems>
+

java/java-tests/testData/inspection/deadCode/severalMainMethods/src/Test.java

@@ -0,0 +1,8 @@
+void main(String[] args){
+
+}
+
+
+void main(){
+
+}