question: private String generateBlendModeImport ( BlendMode blendMode ) { if ( blendMode == BlendMode . COLOR ) return "import mx.graphics.shaderClasses.ColorShader;\n\n" ; else if ( blendMode == BlendMode . COLORBURN ) return "import mx.graphics.shaderClasses.ColorBurnShader;\n\n" ; else if ( blendMode == BlendMode . COLORDODGE ) return "import mx.graphics.shaderClasses.ColorDodgeShader;\n\n" ; else if ( blendMode == BlendMode . EXCLUSION ) return "import mx.graphics.shaderClasses.ExclusionShader;\n\n" ; else if ( blendMode == BlendMode . HUE ) return "import mx.graphics.shaderClasses.HueShader;\n\n" ; else if ( blendMode == BlendMode . LUMINOSITY ) return "import mx.graphics.shaderClasses.LuminosityShader;\n\n" ; else if ( blendMode == BlendMode . SATURATION ) return "import mx.graphics.shaderClasses.SaturationShader;\n\n" ; else if ( blendMode == BlendMode . SOFTLIGHT ) return "import mx.graphics.shaderClasses.SoftLightShader;\n\n" ; else return null ; }
target:  Generates a snippet of ActionScript source code that imports the correct class for the corresponding blend mode.