Minor fixes

- Query ID
- MethodAccess -> MethodCall
- Redundant import
- Formatting

Author: atorralba

java/ql/src/experimental/Security/CWE/CWE-470/LoadClassNoSignatureCheck.ql

@@ -7,21 +7,20 @@
  * @problem.severity error
  * @precision high
  * @kind path-problem
- * @id java/unsafe-reflection
+ * @id java/android/unsafe-reflection
  * @tags security
  *       experimental
  *       external/cwe/cwe-470
  */
 
 import java
-import semmle.code.java.dataflow.DataFlow
 import semmle.code.java.dataflow.TaintTracking
 import semmle.code.java.controlflow.Guards
 import semmle.code.java.dataflow.SSA
 import semmle.code.java.frameworks.android.Intent
 
 class CheckSignaturesGuard extends Guard instanceof EqualityTest {
-  MethodAccess checkSignatures;
+  MethodCall checkSignatures;
 
   CheckSignaturesGuard() {
     this.getAnOperand() = checkSignatures and
@@ -52,23 +51,23 @@ predicate signatureChecked(Expr safe) {
 
 module InsecureLoadingConfig implements DataFlow::ConfigSig {
   predicate isSource(DataFlow::Node src) {
-    exists(Method m | m = src.asExpr().(MethodAccess).getMethod() |
+    exists(Method m | m = src.asExpr().(MethodCall).getMethod() |
       m.getDeclaringType().getASourceSupertype*() instanceof TypeContext and
       m.hasName("createPackageContext") and
-      not signatureChecked(src.asExpr().(MethodAccess).getArgument(0))
+      not signatureChecked(src.asExpr().(MethodCall).getArgument(0))
     )
   }
 
   predicate isSink(DataFlow::Node sink) {
-    exists(MethodAccess ma |
+    exists(MethodCall ma |
       ma.getMethod().hasQualifiedName("java.lang", "ClassLoader", "loadClass")
     |
       sink.asExpr() = ma.getQualifier()
     )
   }
 
   predicate isAdditionalFlowStep(DataFlow::Node node1, DataFlow::Node node2) {
-    exists(MethodAccess ma, Method m |
+    exists(MethodCall ma, Method m |
       ma.getMethod() = m and
       m.getDeclaringType().getASourceSupertype*() instanceof TypeContext and
       m.hasName("getClassLoader")
@@ -87,4 +86,3 @@ from InsecureLoadFlow::PathNode source, InsecureLoadFlow::PathNode sink
 where InsecureLoadFlow::flowPath(source, sink)
 select sink.getNode(), source, sink, "Class loaded from a $@ without signature check",
   source.getNode(), "third party library"
-