docs: @Pure
  	public final Vector3f getAxis() {
  		double mag = this.x*this.x + this.y*this.y + this.z*this.z;  
  
  		if ( mag > EPS ) {
  			mag = Math.sqrt(mag);
  			double invMag = 1f/mag;
  
  			return new Vector3f(
  					this.x*invMag,
  					this.y*invMag,
  					this.z*invMag);
  		}
  		return new Vector3f(0f, 0f, 1f);
  	}