question: returns true if this buffer is empty , that is , its #length is equal to 0 . concode_field_sep int len concode_elem_sep byte[] buffer concode_elem_sep long serialVersionUID concode_field_sep int byteAt concode_elem_sep void expand concode_elem_sep void setLength concode_elem_sep byte[] toByteArray concode_elem_sep void clear concode_elem_sep int length concode_elem_sep void ensureCapacity concode_elem_sep byte[] buffer concode_elem_sep boolean isFull concode_elem_sep int indexOf concode_elem_sep int indexOf concode_elem_sep void append concode_elem_sep void append concode_elem_sep void append concode_elem_sep void append concode_elem_sep int capacity
target: boolean function ( ) { return this . len == 0 ; }