https://github.com/oracle/graal: GraalVM is an ecosystem for compiling and running applications written in multiple languages. GraalVM removes the isolation between programming languages and enables interoperability in a shared runtime. 
public interface org.graalvm.nativeimage.c.CContext$Directives
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.nativeimage.c.CContext$Directives
  super_class: java.lang.Object
{
  public boolean isInConfiguration();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.nativeimage.c.CContext$Directives this
         0: .line 85
            iconst_1
            ireturn
        end local 0 // org.graalvm.nativeimage.c.CContext$Directives this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/nativeimage/c/CContext$Directives;

  public java.util.List<java.lang.String> getHeaderFiles();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.nativeimage.c.CContext$Directives this
         0: .line 96
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
        end local 0 // org.graalvm.nativeimage.c.CContext$Directives this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/nativeimage/c/CContext$Directives;
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public java.util.List<java.lang.String> getMacroDefinitions();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.nativeimage.c.CContext$Directives this
         0: .line 106
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
        end local 0 // org.graalvm.nativeimage.c.CContext$Directives this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/nativeimage/c/CContext$Directives;
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public java.util.List<java.lang.String> getOptions();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.nativeimage.c.CContext$Directives this
         0: .line 116
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
        end local 0 // org.graalvm.nativeimage.c.CContext$Directives this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/nativeimage/c/CContext$Directives;
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public java.util.List<java.lang.String> getLibraries();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.nativeimage.c.CContext$Directives this
         0: .line 126
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
        end local 0 // org.graalvm.nativeimage.c.CContext$Directives this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/nativeimage/c/CContext$Directives;
    Signature: ()Ljava/util/List<Ljava/lang/String;>;

  public java.util.List<java.lang.String> getLibraryPaths();
    descriptor: ()Ljava/util/List;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.graalvm.nativeimage.c.CContext$Directives this
         0: .line 135
            invokestatic java.util.Collections.emptyList:()Ljava/util/List;
            areturn
        end local 0 // org.graalvm.nativeimage.c.CContext$Directives this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/graalvm/nativeimage/c/CContext$Directives;
    Signature: ()Ljava/util/List<Ljava/lang/String;>;
}
SourceFile: "CContext.java"
NestHost: org.graalvm.nativeimage.c.CContext
InnerClasses:
  public abstract Directives = org.graalvm.nativeimage.c.CContext$Directives of org.graalvm.nativeimage.c.CContext