:compileJavaF:\test\2\NNN-M4\build\sources\main\java\de\Mari_023\diorite_trapdoors\blocks\TestTrapDoor.java:85: error: cannot find symbol
public void neighborChanged(IBlockState state, World worldIn, BlockPos pos, Block blockIn, BlockPos fromPos) {
^
symbol: class Block
location: class TestTrapDoor
1 error
FAILED
can you at least tell me about the valid parameter in this......