https://www.graalvm.org/ 
class org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 extends org.graalvm.component.installer.Environment
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1
  super_class: org.graalvm.component.installer.Environment
{
  final org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain this$1;
    descriptor: Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;
    flags: (0x1010) ACC_FINAL, ACC_SYNTHETIC

  void <init>(org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain, java.lang.String, java.util.List, java.util.Map);
    descriptor: (Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;Ljava/lang/String;Ljava/util/List;Ljava/util/Map;)V
    flags: (0x0000) 
    Code:
      stack=4, locals=5, args_size=5
        start local 0 // org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 this
        start local 2 // java.lang.String $anonymous0
        start local 3 // java.util.List $anonymous1
        start local 4 // java.util.Map $anonymous2
         0: .line 69
            aload 0 /* this */
            aload 1
            putfield org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1.this$1:Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;
            aload 0 /* this */
            aload 2 /* $anonymous0 */
            aload 3 /* $anonymous1 */
            aload 4 /* $anonymous2 */
            invokespecial org.graalvm.component.installer.Environment.<init>:(Ljava/lang/String;Ljava/util/List;Ljava/util/Map;)V
            return
        end local 4 // java.util.Map $anonymous2
        end local 3 // java.util.List $anonymous1
        end local 2 // java.lang.String $anonymous0
        end local 0 // org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    1     0         this  Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain$1;
            0    1     2  $anonymous0  Ljava/lang/String;
            0    1     3  $anonymous1  Ljava/util/List<Ljava/lang/String;>;
            0    1     4  $anonymous2  Ljava/util/Map<Ljava/lang/String;Ljava/lang/String;>;
    MethodParameters:
             Name  Flags
      this$0       final
      $anonymous0  
      $anonymous1  
      $anonymous2  

  public java.util.Map<java.lang.String, java.lang.String> parameters(boolean);
    descriptor: (Z)Ljava/util/Map;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 this
        start local 1 // boolean cmdLine
         0: .line 72
            aload 0 /* this */
            getfield org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1.this$1:Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;
            invokestatic org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain.access$0:(Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;)Lorg/graalvm/component/installer/InstallerCommandlineTest;
            iload 1 /* cmdLine */
            invokevirtual org.graalvm.component.installer.InstallerCommandlineTest.parameters:(Z)Ljava/util/Map;
            areturn
        end local 1 // boolean cmdLine
        end local 0 // org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain$1;
            0    1     1  cmdLine  Z
    Signature: (Z)Ljava/util/Map<Ljava/lang/String;Ljava/lang/String;>;
    MethodParameters:
         Name  Flags
      cmdLine  

  public java.lang.String getParameter(java.lang.String, boolean);
    descriptor: (Ljava/lang/String;Z)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=3, args_size=3
        start local 0 // org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 this
        start local 1 // java.lang.String key
        start local 2 // boolean cmdLine
         0: .line 77
            aload 0 /* this */
            getfield org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1.this$1:Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;
            invokestatic org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain.access$0:(Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain;)Lorg/graalvm/component/installer/InstallerCommandlineTest;
            aload 1 /* key */
            iload 2 /* cmdLine */
            invokevirtual org.graalvm.component.installer.InstallerCommandlineTest.getParameter:(Ljava/lang/String;Z)Ljava/lang/String;
            areturn
        end local 2 // boolean cmdLine
        end local 1 // java.lang.String key
        end local 0 // org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1 this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0     this  Lorg/graalvm/component/installer/InstallerCommandlineTest$MockInstallerMain$1;
            0    1     1      key  Ljava/lang/String;
            0    1     2  cmdLine  Z
    MethodParameters:
         Name  Flags
      key      
      cmdLine  
}
SourceFile: "InstallerCommandlineTest.java"
EnclosingMethod: org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain.setupEnvironment:(Lorg/graalvm/component/installer/SimpleGetopt;)Lorg/graalvm/component/installer/Environment;
NestHost: org.graalvm.component.installer.InstallerCommandlineTest
InnerClasses:
  MockInstallerMain = org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain of org.graalvm.component.installer.InstallerCommandlineTest
  org.graalvm.component.installer.InstallerCommandlineTest$MockInstallerMain$1