🐛 Improve method matching to catch static methods declared on class fields (#150) (#156)

* Improve method matching to catch static methods declared on class fields



# Conflicts:
#	java-analyzer-bundle.core/src/main/java/io/konveyor/tackle/core/internal/SampleDelegateCommandHandler.java

* Remove unnecessary line



---------

Signed-off-by: Juan Manuel Leflet Estrada <jleflete@redhat.com>
Signed-off-by: Cherry Picker <noreply@github.com>
Co-authored-by: Juan Manuel Leflet Estrada <jleflete@redhat.com>

Author: konveyor-ci-bot[bot]

java-analyzer-bundle.core/src/main/java/io/konveyor/tackle/core/internal/symbol/MethodCallSymbolProvider.java

@@ -7,9 +7,9 @@
 
 import org.eclipse.jdt.core.IClassFile;
 import org.eclipse.jdt.core.ICompilationUnit;
+import org.eclipse.jdt.core.IField;
 import org.eclipse.jdt.core.IJavaElement;
 import org.eclipse.jdt.core.IMethod;
-import org.eclipse.jdt.core.ITypeRoot;
 import org.eclipse.jdt.core.compiler.IProblem;
 import org.eclipse.jdt.core.dom.AST;
 import org.eclipse.jdt.core.dom.ASTParser;
@@ -32,15 +32,21 @@ public List<SymbolInformation> get(SearchMatch match) {
         // For Method Calls we will need to do the local variable trick
         try {
             MethodReferenceMatch m = (MethodReferenceMatch) match;
-            IMethod e = (IMethod) m.getElement();
+            IJavaElement e = (IJavaElement) m.getElement();
             SymbolInformation symbol = new SymbolInformation();
             Location location = getLocation((IJavaElement) match.getElement(), match);
             symbol.setName(e.getElementName());
             symbol.setKind(convertSymbolKind(e));
             symbol.setContainerName(e.getParent().getElementName());
             symbol.setLocation(location); 
             if (this.query.contains(".")) { 
-                ICompilationUnit unit = e.getCompilationUnit();
+                ICompilationUnit unit = null;
+                if (m.getElement() instanceof IMethod) {
+                    unit = ((IMethod) m.getElement()).getCompilationUnit();
+                } else if (m.getElement() instanceof IField) {
+                    unit = ((IField) m.getElement()).getCompilationUnit();
+                }
+
                 if (unit == null) {
                     IClassFile cls = (IClassFile) ((IJavaElement) e).getAncestor(IJavaElement.CLASS_FILE);
                     if (cls != null) {