https://www.graalvm.org/ 
class org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader implements java.util.function.Function<java.lang.String, java.lang.String>
  minor version: 0
  major version: 59
  flags: flags: (0x0020) ACC_SUPER
  this_class: org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader
  super_class: java.lang.Object
{
  private final java.lang.String compPrefix;
    descriptor: Ljava/lang/String;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final java.util.Properties props;
    descriptor: Ljava/util/Properties;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  void <init>(java.lang.String, java.util.Properties);
    descriptor: (Ljava/lang/String;Ljava/util/Properties;)V
    flags: (0x0000) 
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader this
        start local 1 // java.lang.String compPrefix
        start local 2 // java.util.Properties props
         0: .line 245
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 246
            aload 0 /* this */
            aload 1 /* compPrefix */
            putfield org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader.compPrefix:Ljava/lang/String;
         2: .line 247
            aload 0 /* this */
            aload 2 /* props */
            putfield org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader.props:Ljava/util/Properties;
         3: .line 248
            return
        end local 2 // java.util.Properties props
        end local 1 // java.lang.String compPrefix
        end local 0 // org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lorg/graalvm/component/installer/remote/RemotePropertiesStorage$PrefixedPropertyReader;
            0    4     1  compPrefix  Ljava/lang/String;
            0    4     2       props  Ljava/util/Properties;
    MethodParameters:
            Name  Flags
      compPrefix  
      props       

  public java.lang.String apply(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader this
        start local 1 // java.lang.String t
         0: .line 252
            aload 0 /* this */
            getfield org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader.props:Ljava/util/Properties;
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            getfield org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader.compPrefix:Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* t */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokevirtual java.util.Properties.getProperty:(Ljava/lang/String;)Ljava/lang/String;
            areturn
        end local 1 // java.lang.String t
        end local 0 // org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/component/installer/remote/RemotePropertiesStorage$PrefixedPropertyReader;
            0    1     1     t  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      t     

  public java.lang.Object apply(java.lang.Object);
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            checkcast java.lang.String
            invokevirtual org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader.apply:(Ljava/lang/String;)Ljava/lang/String;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
Signature: Ljava/lang/Object;Ljava/util/function/Function<Ljava/lang/String;Ljava/lang/String;>;
SourceFile: "RemotePropertiesStorage.java"
NestHost: org.graalvm.component.installer.remote.RemotePropertiesStorage
InnerClasses:
  PrefixedPropertyReader = org.graalvm.component.installer.remote.RemotePropertiesStorage$PrefixedPropertyReader of org.graalvm.component.installer.remote.RemotePropertiesStorage