https://source.android.com/ 
public interface android.text.TextDirectionHeuristic
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.text.TextDirectionHeuristic
  super_class: java.lang.Object
{
  public abstract boolean isRtl(char[], int, int);
    descriptor: ([CII)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      array  
      start  
      count  

  public abstract boolean isRtl(java.lang.CharSequence, int, int);
    descriptor: (Ljava/lang/CharSequence;II)Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
       Name  Flags
      cs     
      start  
      count  
}
SourceFile: "TextDirectionHeuristic.java"