MinecraftForge/MinecraftForge — pull request #145 by Soaryn (2012-08-28 16:11:53+00:00)
Title: Adds setWalkSpeed(float) to Player Capabilities

Required for adding effects to the player based on items, potions, etc. Uses @SideOnly(Side.CLIENT)
Function for setFlySpeed(float) already exists. (Client Side only)