PFNGLTEXTURESTORAGE1DEXTPROCDart typedef
        PFNGLTEXTURESTORAGE1DEXTPROCDart =
     void Function(int texture, int target, int levels, int internalformat, int width)
    
    
    
Implementation
typedef PFNGLTEXTURESTORAGE1DEXTPROCDart =
    void Function(
      int texture,
      int target,
      int levels,
      int internalformat,
      int width,
    );