http://www.jboss.org/shrinkwrap-resolver-parent/shrinkwrap-resolver-impl-maven: Implementation for Resolving Dependencies from a Maven Backend (JBoss by Red Hat) 
abstract class org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl<RESOLVESTAGETYPE extends org.jboss.shrinkwrap.resolver.api.maven.MavenResolveStageBase<RESOLVESTAGETYPE, STRATEGYSTAGETYPE, FORMATSTAGETYPE>, STRATEGYSTAGETYPE extends org.jboss.shrinkwrap.resolver.api.maven.MavenStrategyStageBase<STRATEGYSTAGETYPE, FORMATSTAGETYPE>, FORMATSTAGETYPE extends org.jboss.shrinkwrap.resolver.api.maven.MavenFormatStage> extends org.jboss.shrinkwrap.resolver.impl.maven.ResolveStageBaseImpl<RESOLVESTAGETYPE, STRATEGYSTAGETYPE, FORMATSTAGETYPE>
  minor version: 0
  major version: 59
  flags: flags: (0x0420) ACC_SUPER, ACC_ABSTRACT
  this_class: org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl
  super_class: org.jboss.shrinkwrap.resolver.impl.maven.ResolveStageBaseImpl
{
  protected void <init>(org.jboss.shrinkwrap.resolver.api.maven.MavenWorkingSession);
    descriptor: (Lorg/jboss/shrinkwrap/resolver/api/maven/MavenWorkingSession;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl this
        start local 1 // org.jboss.shrinkwrap.resolver.api.maven.MavenWorkingSession session
         0: .line 20
            aload 0 /* this */
            aload 1 /* session */
            invokespecial org.jboss.shrinkwrap.resolver.impl.maven.ResolveStageBaseImpl.<init>:(Lorg/jboss/shrinkwrap/resolver/api/maven/MavenWorkingSession;)V
         1: .line 21
            return
        end local 1 // org.jboss.shrinkwrap.resolver.api.maven.MavenWorkingSession session
        end local 0 // org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    2     0     this  Lorg/jboss/shrinkwrap/resolver/impl/maven/MavenResolveStageBaseImpl<TRESOLVESTAGETYPE;TSTRATEGYSTAGETYPE;TFORMATSTAGETYPE;>;
            0    2     1  session  Lorg/jboss/shrinkwrap/resolver/api/maven/MavenWorkingSession;
    MethodParameters:
         Name  Flags
      session  final

  public org.jboss.shrinkwrap.resolver.api.maven.MavenVersionRangeResult resolveVersionRange(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/jboss/shrinkwrap/resolver/api/maven/MavenVersionRangeResult;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl this
        start local 1 // java.lang.String coordinate
         0: .line 30
            aload 1 /* coordinate */
            invokestatic org.jboss.shrinkwrap.resolver.impl.maven.util.Validate.isNullOrEmpty:(Ljava/lang/String;)Z
            pop
         1: .line 32
            aload 1 /* coordinate */
            invokestatic org.jboss.shrinkwrap.resolver.api.maven.coordinate.MavenCoordinates.createCoordinate:(Ljava/lang/String;)Lorg/jboss/shrinkwrap/resolver/api/maven/coordinate/MavenCoordinate;
            astore 2 /* mavenCoordinate */
        start local 2 // org.jboss.shrinkwrap.resolver.api.maven.coordinate.MavenCoordinate mavenCoordinate
         2: .line 33
            aload 0 /* this */
            invokevirtual org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl.getMavenWorkingSession:()Lorg/jboss/shrinkwrap/resolver/api/maven/MavenWorkingSession;
            aload 2 /* mavenCoordinate */
            invokeinterface org.jboss.shrinkwrap.resolver.api.maven.MavenWorkingSession.resolveVersionRange:(Lorg/jboss/shrinkwrap/resolver/api/maven/coordinate/MavenCoordinate;)Lorg/jboss/shrinkwrap/resolver/api/maven/MavenVersionRangeResult;
            areturn
        end local 2 // org.jboss.shrinkwrap.resolver.api.maven.coordinate.MavenCoordinate mavenCoordinate
        end local 1 // java.lang.String coordinate
        end local 0 // org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl this
      LocalVariableTable:
        Start  End  Slot             Name  Signature
            0    3     0             this  Lorg/jboss/shrinkwrap/resolver/impl/maven/MavenResolveStageBaseImpl<TRESOLVESTAGETYPE;TSTRATEGYSTAGETYPE;TFORMATSTAGETYPE;>;
            0    3     1       coordinate  Ljava/lang/String;
            2    3     2  mavenCoordinate  Lorg/jboss/shrinkwrap/resolver/api/maven/coordinate/MavenCoordinate;
    Exceptions:
      throws java.lang.IllegalArgumentException
    MethodParameters:
            Name  Flags
      coordinate  final

  public org.jboss.shrinkwrap.resolver.api.VersionRangeResult resolveVersionRange(java.lang.String);
    descriptor: (Ljava/lang/String;)Lorg/jboss/shrinkwrap/resolver/api/VersionRangeResult;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=2, locals=2, args_size=2
         0: .line 1
            aload 0
            aload 1
            invokevirtual org.jboss.shrinkwrap.resolver.impl.maven.MavenResolveStageBaseImpl.resolveVersionRange:(Ljava/lang/String;)Lorg/jboss/shrinkwrap/resolver/api/maven/MavenVersionRangeResult;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
    Exceptions:
      throws java.lang.IllegalArgumentException
}
Signature: <RESOLVESTAGETYPE::Lorg/jboss/shrinkwrap/resolver/api/maven/MavenResolveStageBase<TRESOLVESTAGETYPE;TSTRATEGYSTAGETYPE;TFORMATSTAGETYPE;>;STRATEGYSTAGETYPE::Lorg/jboss/shrinkwrap/resolver/api/maven/MavenStrategyStageBase<TSTRATEGYSTAGETYPE;TFORMATSTAGETYPE;>;FORMATSTAGETYPE::Lorg/jboss/shrinkwrap/resolver/api/maven/MavenFormatStage;>Lorg/jboss/shrinkwrap/resolver/impl/maven/ResolveStageBaseImpl<TRESOLVESTAGETYPE;TSTRATEGYSTAGETYPE;TFORMATSTAGETYPE;>;
SourceFile: "MavenResolveStageBaseImpl.java"