getUniformBlockIndex method
Implementation
int getUniformBlockIndex(WebGLProgram program, String uniformBlockName) =>
    js_util.callMethod(
        this, 'getUniformBlockIndex', [program, uniformBlockName]);int getUniformBlockIndex(WebGLProgram program, String uniformBlockName) =>
    js_util.callMethod(
        this, 'getUniformBlockIndex', [program, uniformBlockName]);