/**
* This method sets blocks with given Material around Panel with given row count.
* @param panelBuilder object that builds Panel.
* @param rowCount in Panel.
* @param material that will be around Panel.
*/
PanelUtils#fillBorder(PanelBuilder panelBuilder, int rowCount, Material material)
/**
* This method transforms entity into player head with skin that corresponds given
* entity. If entity head is not found, then it is replaced by barrier block.
* @param entity which head must be returned.
* @param amount of ItemStack elements.
* @return ItemStack that may be head for given entity.
*/
PanelUtils#getEntityHead(EntityType entity, int amount)
/**
* This method transforms entity into egg or block that corresponds given entity.
* If entity egg is not found, then it is replaced by block that represents entity or
* barrier block.
* @param entity which egg must be returned.
* @param amount of ItemStack elements.
* @return ItemStack that may be egg for given entity.
*/
PanelUtils#getEntityEgg(EntityType entity, int amount)
/**
* This method transforms material into item stack that can be displayed in users
* inventory, as not all materials can be displayed.
* @param material which item stack must be returned.
* @param amount of ItemStack elements.
* @return ItemStack that represents given material.
*/
PanelUtils#getMaterialItem(Material material, int amount)
