information on wdevent in method key = wdevent->get_string_( 'KEY' ).

hi,

im new to wd-abap and im unable to under stand how this method gets called wdevent in method key = wdevent->get_string_( 'KEY' ).

data:

text type string,

key type string.

DATA:

node_main TYPE REF TO if_wd_context_node,

elem_main TYPE REF TO if_wd_context_element,

• wdevent TYPE REF TO if_wd_context_element,

stru_main TYPE if_main_view=>element_main ,

item_text LIKE stru_main-text.

• navigate from <CONTEXT> to <MAIN> via lead selection

node_main = wd_context->get_child_node( name = if_main_view=>wdctx_main ).

key = wdevent->get_string( 'KEY' ).

this method is getting called from any part of context in my program please send me your response and any relevant documents