As per #1046 (comment)

ASTLocalVariableDeclaration.getVariableName() returns the name of the first variable declarator id, but there may be more in the case of byte var1, var2, var3; and even the types may be slightly different thanks to arrays (ie: byte var1, var2[], var3[][];).

The Javadoc for getVariableName says this, but I fail to find a use-case where only the first one is going to be needed... I think we should deprecate it and simply have ASTLocalVariableDeclaration implement Iterable<ASTVariableDeclarator> and we should just use those...