checks the connectivity of this graph . concode_field_sep Sentence sentence concode_elem_sep Integer[] heads concode_elem_sep long serialVersionUID concode_elem_sep String[] labels concode_field_sep String[] getLabels concode_elem_sep boolean isProjective concode_elem_sep Sentence getSentence concode_elem_sep void setHead concode_elem_sep void setLabel concode_elem_sep String toString concode_elem_sep Integer[] getHeads concode_elem_sep boolean hasArc concode_elem_sep int getRoot concode_elem_sep String dependencies
boolean function ( ) { return true ; }